Mumps arthritis.
D000293:Adolescent; D001168:Arthritis / Q000150:complications* / Q000175:diagnosis; D001799:Blood Sedimentation; D003168:Complement Fixation Tests; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D009107:Mumps / Q000150:complications*; D009920:Orchitis / Q000209:etiology; D010309:Parotitis / Q000150:complications / Q000209:etiology